Mold in air ducts can spread tiny spores through your home every time the HVAC system runs. You may not see mold inside the ducts, but your body can still react to it. Common mold in air ducts symptoms include allergy-like problems, musty smells, and breathing issues that get better when you leave home. Here, we will explore seven signs that mold may be in your air ducts, why it happens, what...